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Which expression completes the identity cos u cos v=
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2 votes
Which expression completes the identity cos u cos v=

User TLE
by
8.2k points

2 Answers

1 vote
cos(u+v) = cosu.cosv - sinu.sinv and cosu.cosv= cos(u+v) + sinu.sinv
or
cos(u - v) = cosu.cosv + sinu.sinv and cosu.cosv= cos(u+v) - sinu.sinv

User Frank Myat Thu
by
8.4k points
7 votes

A is the correct answer.


User Tarps
by
8.0k points
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